1. WIKI教程
2. Java.lang包
3. static void yield()

static void yield()

描述 (Description)

java.lang.Thread.yield()方法使当前正在执行的线程对象暂时暂停并允许其他线程执行。

声明 (Declaration)

以下是java.lang.Thread.yield()方法的声明

public static void yield()

参数 (Parameters)

NA

返回值 (Return Value)

此方法不返回任何值。

异常 (Exception)

例子 (Example)

以下示例显示了java.lang.Thread.yield（）方法的用法。

package com.iowiki;
import java.lang.*;
public class ThreadDemo implements Runnable {
   Thread t;
   ThreadDemo(String str) {
      t = new Thread(this, str);
      // this will call run() function
      t.start();
   }
   public void run() {
      for (int i = 0; i < 5; i++) {
         // yields control to another thread every 5 iterations
         if ((i % 5) == 0) {
            System.out.println(Thread.currentThread().getName() + "
            yielding control...");
            /* causes the currently executing thread object to temporarily 
            pause and allow other threads to execute */
            Thread.yield();
         }
      }
      System.out.println(Thread.currentThread().getName() + " has finished executing.");
   }
   public static void main(String[] args) {
      new ThreadDemo("Thread 1");
      new ThreadDemo("Thread 2");
      new ThreadDemo("Thread 3");
   }
}

让我们编译并运行上面的程序，这将产生以下结果 -

Thread 1 is yielding control...
Thread 2 is yielding control...
Thread 3 is yielding control...
Thread 1 has finished executing.
Thread 2 has finished executing.
Thread 3 has finished executing.